Festivities of Jaulín Activity · Jaulín, Comarca Central, Zaragoza Image of Jaulín, not of the place itself. Jaulín celebrates its patronal festivities on 3 February in honour of San Blas and on 2 June in honour of San Marcelino. Devotion to San Blas is longstanding in the town: Pascual Madoz's geographical dictionary, from 1847, already records the existence of a hermitage dedicated to this saint in the municipal territory. Photo: Deivid (Public domain) What to see and do in Jaulín